Your shopping cart is empty!
American Association of State and Highway Transportation Officials, 2022
Publisher: AASHTO
File Format: PDF
$36.00$73.00
Pages:5
File Size:1 file , 270 KB
Note:This product is unavailable in Ukraine, Russia, Belarus
This qualitative test method can be used to identify the presence of polyphosphoric acid (PPA) in asphalt binder or residue. If PPA is present in the binder, a blue color is developed in approximately 5 min. The test method is not quantitative, but it can detect PPA at concentrations as low as 0.1 percent. The test method can only determine the presence of phosphorus. It is not specific for the presence of PPA. A positive test result assumes that the phosphorus is from PPA. Any additive that contains phosphorus will give a false positive for the presence of PPA.
This standard was formerly designated as provisional standard TP 78.
Standard Specification for Steel Bars, Carbon, Merchant Quality, Mechanical Properties
$20.00 $40.00
Standard Practice for Decommissioning Geotechnical Exploratory Boreholes
$39.00 $78.00
Standard Method of Test for Compressive Strength of Concrete Using Portions of Beams Broken in Flexure
$33.00 $66.00
Standard Method of Test for Length Change of Hardened Hydraulic Cement Mortar and Concrete (ASTM Designation: C157-93)
$60.00 $120.00
